Removable horseshoe-calk.



D. A. SHAFFER.

' REMOVABLE HOZRSESHOE CAI-K.

' APPLICATION FILED SEPT. 251908.

924,586. Patented June 8, 1909.

WITNESSES UNITED sTATEs DAVID A. SHAFFER, OF HARRISBURG, PENNSYLVANIA.

PATENT OFFICE.

REMOVABLE HORSESHdE-GALK.

Horseshoe-Calks. 0 which the following is acter whereby the calks may bereadily removed when so desired; I

A further ob ect ofmy invention is to provide a removable calk forhorseshoes in which the calk when it has been worn down may be removedand a new one put in its place. v I With these ends in view, thisinvention consists in the details of construction and combination ofelements hereinafter set forth and then specifically designated bytheclaims. p v

In order that those skilled in the art to which this inventionap'pertains may under stand how to make and use the same, I willdescribe its construction in detail, referring by letter totheaccompanying drawing forming a part of this specification, in whichFigure 1 is a bottom plan of the calk applied to a horseshoe. Fig. 2, abottom plan of the plate to which the calks are applied. Fig. 3, asection at, the line m-w of Fi 1'.

I 1g. 4, a similar view of a sllghtly modified form of my improvement,the ealk being re-., moved from the horseshoe. Fig. 5, a side elevationof a portion of a still further modified form of my invention. Fig. 6, abottom plan view thereof, and Fig. 7, a side elevalion of one of thecalks proper, showing a means for adjustment applied thereto.

In carrying out my invention as here embodied. A represents a horseshoeof the ordinary form and construction, having a toe (illh' l3 and heelcalks C formed therewith. The removable toe calks are carried upon theplates 1), which have cavities formed with their forward ends, and'inthe bottom of these cavities are formed the apertures I for thereception of the toe calks- G, said calks having a flange H formedaround their upper ends so that when they are placed in the cavity andextend through the aperture the flange will prevent them from assing outof the cavity. The plates have Specification of Letters Patent.-Application filed September 25,1908; Serial no. 454,747.

Patented June 8, 1909.

upwardly extending projections Iwhich lap overtheupper edge of thehorseshoe, thus alssistingin holding the plates to said. horses me. iFormed on the inside of the forward ends of the plate D are the lugs J,having an opening K passing .th-roughthem. Through these lugs is passeda screw or bolt L, on the farther said nut is threaded on the 'bolt thetighter the forward ends of the plate D will be drawn together. On theupper face of the rear ends, of these platesD are formed the threadedlugs=N for the purpose to be hereinafter described.

'calks are attached having-the cavityP formed therewith, inthe bottom ofwhich is an aper- -ture Q through which passes-the heel calks R formedsimilar to the toe calks G, and if found necessary set screws R may beused to assist in holding the rear calks in place.

are pivoted the threaded lugs S, and in ordrawnnp to the forward platesD, the turn buckles '1 having a right and left hand thread formedthereon are threaded into the threaded lugs N and S, and by turning theturn buckles T the plates will be drawn toward one another, which willsecurely hold them upon the shoe. 1 j In practice, the forward plates Dwith the calks G therein are placed upon the shoe so that said calksrest upon the-shoecalks B, which will prevent the calks G from fallinginto the cavlty E, and the flange H will prevent the calks from leavingthe cavity.

-\Vhe'n the plates Dare in place the rear -in, the turn buckles T firstbeing loosened position shown in Fig. 1, at which time the heel'calk ofthe shoe will have entered the cavity l and the plates'() may be swungfrom side to side because the lugs S are pivoted thereto. 'After theseplates are in position the'turn buckles T are tightened and thetightening and securely holding them onfthe shoe, and by loosening theturnbuckles and the nut ill the plates and ralksmay be re.- moved fromthe shoe.

As is sometimes the ease ihe horseshoe might be used a while before theweather is .endrof which is threaded a nut M, and the 0 denotes theplates to which the heel To the forward'end's of the rear plates 0plates ()h'aving the calltsR are. placed there nut M threaded farther onthe bolt- L which "will draw all the parts toward one another,

der. that the rear plates may be fastened and are then swung arounduntil they assume the such that sharp Cilllib' are needed, in which casethe heel and toe calks on the shoe may have been worn to a certainextent, it is then found desirable to place an adjusting screw U in thecentral portion of the top of the calks, and by threading them asuitable distance into said ealks it will take up the space between thetop of the calk and the bottom of the ealks on the shoe, the head of thescrew A0 resting against the shoe calks.

I In my modified form of improvement as shown in Fig. 4, 1 form in thebottom of the cavities E and l screw receiving openings V, through whichis placed a screw \V, said screw being threaded into the. calks which ihold the ealks to the plates against the outside of the bottoms of thecavities.

111 my modified form as shown in Figs. 5 and (3, l have formed the calksY integralwith the plates D and 0, so that as they wear'down the platesare removed from the shoe in order that the calks maybe sharp ened, andwhen they have "worn completely away new plates mustbe substituted forthe old ones.

Of course I do not wish to be limited to the exact details here shown asthese may be varied within certain limits without departin r from thespirit of my invention.

Having thus fully described my invention, what I claim as new anduseful, is p 1. in a removable calk, the combination of two forwardplates having cavities formed with their forward ends 111 the bottom ofwhich are formed apertures, detachable calks placed in said cavitiesextending through the apertures, rear plates having cavities formed withtheir rear ends; in the bottom of which are formed apertures, de-

tachable eallis placed in said cavities and extending through theapertures, lugs having openings formed therein' formed on the inside ofthe forward end of the forward plates, other lugs having threads thereinformed on the bottom surface of the rear 1 ends of the forward plates,other lugs having threads therein pivoted to the forward ends of therear plates, a bolt passing through the first named lugs, a nut threadedon said bolt for drawing the forward ends of the forward plates togetherand turn buckles having right and left hand threads thereon threadedinto the other lugs for drawing the forward and rear plates toward oneanother thus tightening and fastening the plates tothe shoe.

2. In a removable calk, the combination of a number of plates, means forsecuring said plates to a horseshoe, ealks detachably secured to theplates and a screw threaded in the top of thecallts for compensating forthe wear upon the horseshoe, as shown and described. 3. The combinationwith a horseshoe hav- 5 ing heel and toe (.tlllis of forward plates, ihaving cavities formed i1itheir forward ends, the bottoms of which haveapertures formed therein, calks having flanges formed on the topthereof, said calks adapted to pass through the apertures and .rest onthe inside surface of the bottoms of the cavities and the tops of thecalks rest against the *toe cal-l: formed with the shoe, rear plateshaving cavities formed with the rear ends thereof, the bottoms of whichhave apertures formed therein, ealks placed in said cavities extendingthrough the apertures, the top of which rests against the bottom of the'heel ealks of the shoe, means for adjusting the calks to compensate forthe wear of the shoe calks, lugs having openings formed therein formedon the inside surface of the forward ends of the forward plates, a boltpassing throughfsaid lugs, a nut threaded thereon, threaded lugs formedwith the rear ends of the forward )lates, other threaded lugs pivoted tothe orward ends of the rear plates and turn buckles having right andleft hand threads fOlll'lQCl thereon threaded into the threaded lugs.

4. In combination with a horseshoe, four plates having upwardly)rojecting extensions formed therewith a apted to extend over the top ofthe shoe calks secured to said means attached to said lugs for securingthe plates to the shoe, as shown and described.

In testimony whereof, I have hereunto afsubsciibing witnesses.

DAVID A. SHAFFER.

\Vitnesses:

WILLIAM HoLLAnns,

plates, lugs formed with said plates and fixed my signature in thepresence of two'

